
   import java.util.Random;
import java.util.Scanner;

    public class Main {
        //求一个整数，在内存当中存储时，二进制1的个数。
        public static void main(String[] args) {
            Scanner scn = new Scanner(System.in);
            int a = scn.nextInt();
            int flag = 0;
            int rem;
            for(int i = 1; i <= 16; i++) {
                rem = a % 2;
                a /=  2;
                if(rem == 1) {
                    flag++;
                }
                if(a == 1) {
                    flag++;
                    break;
                }
                else if( a == 0) {
                    break;
                }
            }
            System.out.println(flag);
        }
        //编写程序数一下 1到 100 的所有整数中出现多少个数字9
        public static void main7(String[] args) {
            int sum = 0;
            int ret = 0;
            for(int i = 1; i <= 100; i++) {
                if(i % 10 == 9) {
                    sum++;
                }
                if(i > 10) {
                    ret = i / 10;
                    if(ret % 10 == 9){
                        sum++;
                    }
                }
            }
            System.out.println(sum);
        }
        //输出 1000 - 2000 之间所有的闰年
        public static void main6(String[] args) {
            for (int i = 1000; i <= 2000; i++) {
                if((i % 4 == 0 && i % 100 != 0) || i % 400 == 0) {
                    System.out.print(i+"  ");
                }
            }

        }
        //打印1-100之间素数
        public static void main5(String[] args) {
            System.out.print("1 2 ");
            for(int j = 3; j <= 100; j++) {
                boolean flag = true;
                for( int i = 2; i < j; i++) {
                    if(j % i == 0) {
                        flag = false;
                    }
                }
                if(flag) {
                    System.out.print(j+" ");
                }
            }

        }
        //判定素数
        public static void main4(String[] args) {
            Scanner scn = new Scanner(System.in);
            int a = scn.nextInt();
            boolean flag = true;
            for( int i = 2; i < a; i++) {
                if(a % i == 0) {
                    flag = false;
                }
            }
            if(flag) {
                System.out.println(a+"是素数 ");
            }
            else {
                System.out.println(a+"不是素数 ");
            }
        }

        public static void main3(String[] args) {
            Scanner scn = new Scanner(System.in);
            Random random = new Random();
            int randomNumber = random.nextInt(100);
            System.out.println(randomNumber);
            String name = scn.nextLine();
            System.out.println(name);
        }
        public static void main2(String[] args) {
            int i = 1;
            while(i <= 100) {
                if(i % 3 != 0 || i % 5 != 0) {
                    i++;
                    continue;
                }
                System.out.println(i);
                i++;
            }
        }
        public static void main1(String[] args) {
            int a = 10;
            System.out.println(a);
            System.out.println(Integer.MIN_VALUE);
            System.out.println(Integer.MAX_VALUE);
            char ch = '啦';
            System.out.println(ch);
            byte m = 88;
            System.out.println(m);
            boolean bool = false;
            System.out.println(bool);
            char c = 'a';
            System.out.println(c);
            String str = "kkkkkkkkkk";
            String ret =String.valueOf(a);
            System.out.println(ret);
            System.out.println(str+c+ch+(a+m));
            System.out.println(10%2.3);
        }
    }
